Method of treating cotton yarn.



UNITED STATES PA ENT OFFICE.

SHINJIRO SHIMIZU, or osAKr-MAcHI JAPmv, ASSIGNOR To MASAO MURAI, orTOKYO, JAPAN.

v METHOD'OF TREATING COTTON YARN.

No Drawing.

To all whom it may concern Be it known that I, SHiNJiRo SHIMIZU, asubject of the Emperor of Japan, residing at No. 155 Shimo-Osaki,Osaki-Machi, in the county of Ebara and Prefecture of Tokyo, Japan, haveinvented certain new and useful Improvements in Methods of TreatingCotton Yarn,

I specification.

and 9% water.

- has been added a small This invention relates to an improved processof treating cotton yarns or fabrics.

tion is to treat the yarns of fabrics in such a manner as to produce asubstance which is entirely free from nap and does not become nappy whenbeing dried or washed with either hot or cold water.

To carry out the invention a powder is prepared from a substance known1n Japan as laonng alcu, which is an edible root found principally in.Japan and designated as Conophallus Konnsgalc in the Japanese EnglishDictionary by J. C. Hepburn, 3d edition. This powder is essentially'composed of 12.5% of proteid 78.5% marinan The yarn operated upon isfirst scoured and then passed through a thick solution made from themannan powder/t0 which quantity of water or a mixture of water andalcohol with a small quantity of glycerin. The yarn is Specification ofLetters Patent.

of which the following is a Patented Apr. 8, 1913.

Application filed February 16, -1 910. Serial No. 544,301.

solution to neutralize any remaining alkali and finally washed withwater.

The above recited steps remove all the nap from the yarn and increasesits tensile strength.

The quantity of'glycerin added to the solution varies with differentyarns.

Having described my invention what I de sire to secure by Letters Patentand claim is:

1. The process of treating yarn to remove the nap therefrom consistingin first scouring it, th en passing the yarn through a solution ofmannan, treating the yarn with an alkali, neutralizing the yarn in anacid solution and finally washing it with water.

2. The process of treating cotton yarn to remove the nap therefrom bypassing it through a solution comprising Konnsgalc (lmown as kon/nyaku)water and alcohol, then treating; it with acaustic soda, neutralizingthe product in an acid solution .and

finally washing it with water.

I 3. The process of treat-ing yarn to remove the nap therefrom bypassing it through a solution consisting of Gonophallws [fannegalcf(known as iconnyaku), water, alcohol and glycerin, next treating theyarn with an alkali, then neutralizing the productin an acid solutionand finally washing the yarn with water.

In testimony whereof I afiix my signature in presence of two witnesses.

SHINJIRO SHIMIZ'U. Witnesses:

P. A. JAY, S. HoRIYi-i.

